Air or vacuum motor.



'Pate l ted Nov. 25, I902.

2Sheats-Sheei l.

I i i l l I! I llllllll l 1 1 May (Application filed Jan. 20, 1899.)

M ARNDT AIR 0R VACUUM MOTOR.

I :No. 714,273. Patented Nov. 25, I902. M.'ARNDT. AIR UR VACUUM MOTOR.

(Application filed Jan. 20, 1899.)

(No Model.) I 2 Sheets-Sheet 2.

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to a locking liquid and suspended on a fu1- ATENT FFICE.

MAX ARNDT, OF AIX-LA-GHAPELLE, GERMANY.

AIR OR VACU UM MOTOR.

SPECIFICATION formingpart of Letters Patent No. 714,273, dated November25, 1902.

Application filed January 20, 1899.

To aZZ whom it may concern.-

Be it known that I, MAX ARNDT, asubject of the King of Prussia, GermanEmperor,re-' siding at the city of Aix-la-Ghapelle, Germany, haveinvented a new and useful Improved Air or Vacuum Motor, (for which hasbeen filed an application for Letters Patent in France June 24, 1898,and in Germany June 23, 1898,)

My invention relates to an air or vacuum motor and to be actuated byslight pressureas, for instance, the draft of a smoke-stack.

My invention consists of a bell dipping incrumed lever, of an aspirator,ventilator, and the like, or with a blast or a smoke stack communicatingwith thebell by a pipe discharging into the interior of the bell, of avalve located on the saidpipe, and of the valve-actuating deviceconnected with the said lever.

In the accompanying drawings I have represented my invention.

Figure 1 is a view and partial section of the apparatus. Fig. 2 is aview of the apparatus connected with astack on a reduced scale.

A ring-shaped vessel, consisting of walls a and a is mountedon legs 0 tocontain a locking liquid b in the annular space a, and a bell c dipsinto that liquid, the bell being suspended by a rod 8' on a two-armedlever h, pivoted at m. Lever h is provided with a counterweightg andwith pins 41 i on a segment fixed to the lever.

A piped discharges into the interior of bell c and is connected to apipe d by a connection pipe or hose (1 Pipe 01 is provided with a hollowstub d of comparatively small diameter, which latter is to be connectedby a hose or pipe with the source of the driving force say asmoke-stack, an aspirator, ventilator, and the like, or with a blast.

A valve e is secured at the upper end of pipe 01 and fixed to a lever f,pivoting on stud n and carrying a counterweight f. Lever f isprovidedwith twoabutments f f to engage alternately with the bent end kof a controlling-lever 7c, pivoting on m and carrying a Weight 70 leverit"is alternately struck by the pins 9 and a? and accordingly swungtoward the left and toward the right, thus alternately As lever 72. isreciprocated Serial No. 702,855. (No model.)

engaging by its end 70 with abutments f and f so as to temporarily openand close valve 6.

The operation of my invention is as follows: Supposing stub pipe 01connected with a smoke-stack and valve e closed, the air within bell 0will be sucked and the latter accordingly lowered, taking along withlever h against the pressure of counterweight g, the pressure differencewithin bell 0 being at the same time balanced by a liquid. column Hrising above the level of the external liquid. As lever 72. performs itsstroke controllinglever in will be struck by pin 2" so as to swingtoward the left under the influence of weight k and open valve e. Inconsequence thereof the sucking action of the smoke-stack with respectto the interior of hell 0 will be interrupted and atmospheric air issucked through the open upper end of pipe 01 but as pipe (1 is of acomparatively small size with respect to pipe 01 as stated heretofore,but a small portion of air will be practically sucked through pipe (1,and the main portion of the air entering through pipe d flows throughpipes d d to the interior of hell 0, restoring the atmospheric pressurewithin the latter. Bell 0 will therefore be raised again under theinfluence of weight g and lever h accordingly swung back until pin a?strikes against controlling lever causing the same to swing toward theright, so as to close again valve 6, and so on. The swinging movement oflever h may be transferred by any convenient means-say, for instance, bya rod 5 The rod 5 can be connected with a crank for driving a shaft. orthe rod .9 can move a piston of a pump. In connecting pipe d with asource of compressed air--a blast, for instance-the controlling actionof lever is is simply to be inverted, so as to open the valve during theupward movement of the bell, (which is efiected by the compressed airentering the interior of the bell,) and so close it during the downwardmovement of the bell after the compressed air has been? discharged.

What I claim, and desire to secure by Letters Patent, is-

In a motor the combination with a smokestack of a bell dipping in asealing liquid and suspended on a counterweighted lever, amain pipedischarging into the interior of the bell my invention I have signed myname in presence of two subscribing Witnesses.

MAX ARNDT.

and connected with the smoke-stack by a branch pipe of a comparativelysmall size, a

valve to temporarily open and close the main pipe and acontrolling-lever actuated by the I 5 said counterweighted lever tocontrol the valve.

In testimony that I claim the foregoing as Witnesses:

O. E. BRUNDAGE, GORDON SCOTT.

